1.

Which oxide of nitrogen is not a common pollutant introduced into the atmosphere both due to natural and human activity

Answer»

`N_2O_5`
`NO_2`
`N_2O`
NO

Solution :Nitrous oxide `(N_2O)` occurs naturally in environment.In automobile ENGINE , when FOSSIL is burnt DINITROGEN & dioxygen combine to yield NO & `NO_2`


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